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[23.128.96.18]) by mx.google.com with ESMTP id cn23si672392edb.216.2020.09.24.17.04.36; Thu, 24 Sep 2020 17:04:59 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=alibaba.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726764AbgIYADc (ORCPT + 99 others); Thu, 24 Sep 2020 20:03:32 -0400 Received: from out30-43.freemail.mail.aliyun.com ([115.124.30.43]:59169 "EHLO out30-43.freemail.mail.aliyun.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726662AbgIYADc (ORCPT ); Thu, 24 Sep 2020 20:03:32 -0400 X-Alimail-AntiSpam: AC=PASS;BC=-1|-1;BR=01201311R151e4;CH=green;DM=||false|;DS=||;FP=0|-1|-1|-1|0|-1|-1|-1;HT=e01e01424;MF=alex.shi@linux.alibaba.com;NM=1;PH=DS;RN=22;SR=0;TI=SMTPD_---0UA-RKS1_1600992202; Received: from IT-FVFX43SYHV2H.lan(mailfrom:alex.shi@linux.alibaba.com fp:SMTPD_---0UA-RKS1_1600992202) by smtp.aliyun-inc.com(127.0.0.1); Fri, 25 Sep 2020 08:03:23 +0800 Subject: Re: [PATCH v19 00/20] per memcg lru_lock To: Daniel Jordan Cc: akpm@linux-foundation.org, mgorman@techsingularity.net, tj@kernel.org, hughd@google.com, khlebnikov@yandex-team.ru, willy@infradead.org, hannes@cmpxchg.org, lkp@intel.com, linux-mm@kvack.org, linux-kernel@vger.kernel.org, cgroups@vger.kernel.org, shakeelb@google.com, iamjoonsoo.kim@lge.com, richard.weiyang@gmail.com, kirill@shutemov.name, alexander.duyck@gmail.com, rong.a.chen@intel.com, mhocko@suse.com, vdavydov.dev@gmail.com, shy828301@gmail.com, aaron.lwe@gmail.com References: <1600918115-22007-1-git-send-email-alex.shi@linux.alibaba.com> <20200924180621.2r62kv4lumnry4zm@ca-dmjordan1.us.oracle.com> From: Alex Shi Message-ID: Date: Fri, 25 Sep 2020 08:01:08 +0800 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:68.0) Gecko/20100101 Thunderbird/68.7.0 MIME-Version: 1.0 In-Reply-To: <20200924180621.2r62kv4lumnry4zm@ca-dmjordan1.us.oracle.com> Content-Type: text/plain; charset=gbk Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org ?? 2020/9/25 ????2:06, Daniel Jordan ะด??: > On Thu, Sep 24, 2020 at 11:28:15AM +0800, Alex Shi wrote: >> The new version rebased on v5.9-rc6 with line by line review by Hugh Dickins. > > These thpscale numbers are from a proto-v19, which now seems to be gone from Hi Daniel, Thanks a lot for testing! Is the head of lruv19 branch 9ee69337d51d on my github? We may just hit a narrow window, which I just removed the old lruv19, and updated a new one. But even the old version has same performance behavior too. :) > Alex Shi's github. Once again, this is a regression test where memcg is > enabled but not used. There's a reasonable amount of isolations from > compaction as expected, as well as reclaim to a lesser extent. > > I confined the runs to one node of a two-socket broadwell server, the same > machine as my other results. thpscale's total_size argument is about 80% of > the node's memory, its madvise option was enabled, and the system's thp > settings are enabled=always and defrag=madvise. > > Both base and lru kernels show huge variance run to run, which is surprising > because I was expecting a microbenchmark like this to be more stable. There > seems to be an overall decrease in mean fault latency with the lru changes, but > it's in the noise, so it's hard to say how much of an improvement it really is. Yes, the lru lock replace has no clear performance changes, unless the migration/compaction compete on different lru locks which require to run in different memcgs, and then tphscale should get some benefit. > > I only ran up to four threads so these would be ready before I left. I'll be > away for a few days. > > > thpscale Fault Latencies > thp thp thp thp > base1 base2 lru1 lru2 > Min fault-base-1 0.00 ( 0.00%) 0.00 ( 0.00%) 0.00 ( 0.00%) 0.00 ( 0.00%) > Min fault-base-3 0.00 ( 0.00%) 0.00 ( 0.00%) 0.00 ( 0.00%) 0.00 ( 0.00%) > Min fault-base-4 0.00 ( 0.00%) 0.00 ( 0.00%) 0.00 ( 0.00%) 0.00 ( 0.00%) > Min fault-huge-1 214.00 ( 0.00%) 227.00 ( -6.07%) 235.00 ( -9.81%) 240.00 ( -12.15%) > Min fault-huge-3 321.00 ( 0.00%) 366.00 ( -14.02%) 323.00 ( -0.62%) 407.00 ( -26.79%) > Min fault-huge-4 441.00 ( 0.00%) 401.00 ( 9.07%) 525.00 ( -19.05%) 434.00 ( 1.59%) > Min fault-both-1 214.00 ( 0.00%) 227.00 ( -6.07%) 235.00 ( -9.81%) 240.00 ( -12.15%) > Min fault-both-3 321.00 ( 0.00%) 366.00 ( -14.02%) 323.00 ( -0.62%) 407.00 ( -26.79%) > Min fault-both-4 441.00 ( 0.00%) 401.00 ( 9.07%) 525.00 ( -19.05%) 434.00 ( 1.59%) > Amean fault-base-1 0.00 ( 0.00%) 0.00 ( 0.00%) 0.00 ( 0.00%) 0.00 ( 0.00%) > Amean fault-base-3 0.00 ( 0.00%) 0.00 ( 0.00%) 0.00 ( 0.00%) 0.00 ( 0.00%) > Amean fault-base-4 0.00 ( 0.00%) 0.00 ( 0.00%) 0.00 ( 0.00%) 0.00 ( 0.00%) > Amean fault-huge-1 1549.55 ( 0.00%) 1667.13 * -7.59%* 1361.50 * 12.14%* 1458.10 * 5.90%* > Amean fault-huge-3 2582.29 ( 0.00%) 2556.45 ( 1.00%) 2756.65 * -6.75%* 2157.29 * 16.46%* > Amean fault-huge-4 2352.21 ( 0.00%) 2709.37 * -15.18%* 2323.89 ( 1.20%) 1888.94 * 19.69%* > Amean fault-both-1 1549.55 ( 0.00%) 1667.13 * -7.59%* 1361.50 * 12.14%* 1458.10 * 5.90%* > Amean fault-both-3 2582.29 ( 0.00%) 2556.45 ( 1.00%) 2756.65 * -6.75%* 2157.29 * 16.46%* > Amean fault-both-4 2352.21 ( 0.00%) 2709.37 * -15.18%* 2323.89 ( 1.20%) 1888.94 * 19.69%* > Stddev fault-base-1 0.00 ( 0.00%) 0.00 ( 0.00%) 0.00 ( 0.00%) 0.00 ( 0.00%) > Stddev fault-base-3 0.00 ( 0.00%) 0.00 ( 0.00%) 0.00 ( 0.00%) 0.00 ( 0.00%) > Stddev fault-base-4 0.00 ( 0.00%) 0.00 ( 0.00%) 0.00 ( 0.00%) 0.00 ( 0.00%) > Stddev fault-huge-1 2011.48 ( 0.00%) 3765.64 ( -87.21%) 3061.45 ( -52.20%) 1758.56 ( 12.57%) > Stddev fault-huge-3 11153.49 ( 0.00%) 8339.83 ( 25.23%) 7017.28 ( 37.08%) 3976.86 ( 64.34%) > Stddev fault-huge-4 8817.67 ( 0.00%) 16241.48 ( -84.19%) 11595.28 ( -31.50%) 6631.47 ( 24.79%) > Stddev fault-both-1 2011.48 ( 0.00%) 3765.64 ( -87.21%) 3061.45 ( -52.20%) 1758.56 ( 12.57%) > Stddev fault-both-3 11153.49 ( 0.00%) 8339.83 ( 25.23%) 7017.28 ( 37.08%) 3976.86 ( 64.34%) > Stddev fault-both-4 8817.67 ( 0.00%) 16241.48 ( -84.19%) 11595.28 ( -31.50%) 6631.47 ( 24.79%) > CoeffVar fault-base-1 0.00 ( 0.00%) 0.00 ( 0.00%) 0.00 ( 0.00%) 0.00 ( 0.00%) > CoeffVar fault-base-3 0.00 ( 0.00%) 0.00 ( 0.00%) 0.00 ( 0.00%) 0.00 ( 0.00%) > CoeffVar fault-base-4 0.00 ( 0.00%) 0.00 ( 0.00%) 0.00 ( 0.00%) 0.00 ( 0.00%) > CoeffVar fault-huge-1 129.81 ( 0.00%) 225.88 ( -74.00%) 224.86 ( -73.22%) 120.61 ( 7.09%) > CoeffVar fault-huge-3 431.92 ( 0.00%) 326.23 ( 24.47%) 254.56 ( 41.06%) 184.35 ( 57.32%) > CoeffVar fault-huge-4 374.87 ( 0.00%) 599.46 ( -59.91%) 498.96 ( -33.10%) 351.07 ( 6.35%) > CoeffVar fault-both-1 129.81 ( 0.00%) 225.88 ( -74.00%) 224.86 ( -73.22%) 120.61 ( 7.09%) > CoeffVar fault-both-3 431.92 ( 0.00%) 326.23 ( 24.47%) 254.56 ( 41.06%) 184.35 ( 57.32%) > CoeffVar fault-both-4 374.87 ( 0.00%) 599.46 ( -59.91%) 498.96 ( -33.10%) 351.07 ( 6.35%) > Max fault-base-1 0.00 ( 0.00%) 0.00 ( 0.00%) 0.00 ( 0.00%) 0.00 ( 0.00%) > Max fault-base-3 0.00 ( 0.00%) 0.00 ( 0.00%) 0.00 ( 0.00%) 0.00 ( 0.00%) > Max fault-base-4 0.00 ( 0.00%) 0.00 ( 0.00%) 0.00 ( 0.00%) 0.00 ( 0.00%) > Max fault-huge-1 90549.00 ( 0.00%) 166062.00 ( -83.39%) 134242.00 ( -48.25%) 82424.00 ( 8.97%) > Max fault-huge-3 1229237.00 ( 0.00%) 392796.00 ( 68.05%) 508290.00 ( 58.65%) 433992.00 ( 64.69%) > Max fault-huge-4 418414.00 ( 0.00%) 1147308.00 (-174.20%) 792153.00 ( -89.32%) 433393.00 ( -3.58%) > Max fault-both-1 90549.00 ( 0.00%) 166062.00 ( -83.39%) 134242.00 ( -48.25%) 82424.00 ( 8.97%) > Max fault-both-3 1229237.00 ( 0.00%) 392796.00 ( 68.05%) 508290.00 ( 58.65%) 433992.00 ( 64.69%) > Max fault-both-4 418414.00 ( 0.00%) 1147308.00 (-174.20%) 792153.00 ( -89.32%) 433393.00 ( -3.58%) > BAmean-50 fault-base-1 0.00 ( 0.00%) 0.00 ( 0.00%) 0.00 ( 0.00%) 0.00 ( 0.00%) > BAmean-50 fault-base-3 0.00 ( 0.00%) 0.00 ( 0.00%) 0.00 ( 0.00%) 0.00 ( 0.00%) > BAmean-50 fault-base-4 0.00 ( 0.00%) 0.00 ( 0.00%) 0.00 ( 0.00%) 0.00 ( 0.00%) > BAmean-50 fault-huge-1 1329.84 ( 0.00%) 1086.23 ( 18.32%) 765.68 ( 42.42%) 1238.41 ( 6.88%) > BAmean-50 fault-huge-3 1410.46 ( 0.00%) 1406.43 ( 0.29%) 1749.95 ( -24.07%) 1362.23 ( 3.42%) > BAmean-50 fault-huge-4 1453.01 ( 0.00%) 1373.01 ( 5.51%) 1268.61 ( 12.69%) 1157.08 ( 20.37%) > BAmean-50 fault-both-1 1329.84 ( 0.00%) 1086.23 ( 18.32%) 765.68 ( 42.42%) 1238.41 ( 6.88%) > BAmean-50 fault-both-3 1410.46 ( 0.00%) 1406.43 ( 0.29%) 1749.95 ( -24.07%) 1362.23 ( 3.42%) > BAmean-50 fault-both-4 1453.01 ( 0.00%) 1373.01 ( 5.51%) 1268.61 ( 12.69%) 1157.08 ( 20.37%) > BAmean-95 fault-base-1 0.00 ( 0.00%) 0.00 ( 0.00%) 0.00 ( 0.00%) 0.00 ( 0.00%) > BAmean-95 fault-base-3 0.00 ( 0.00%) 0.00 ( 0.00%) 0.00 ( 0.00%) 0.00 ( 0.00%) > BAmean-95 fault-base-4 0.00 ( 0.00%) 0.00 ( 0.00%) 0.00 ( 0.00%) 0.00 ( 0.00%) > BAmean-95 fault-huge-1 1428.93 ( 0.00%) 1336.45 ( 6.47%) 1125.72 ( 21.22%) 1324.67 ( 7.30%) > BAmean-95 fault-huge-3 1881.39 ( 0.00%) 1868.23 ( 0.70%) 2257.90 ( -20.01%) 1794.46 ( 4.62%) > BAmean-95 fault-huge-4 1853.49 ( 0.00%) 2038.27 ( -9.97%) 1758.37 ( 5.13%) 1522.69 ( 17.85%) > BAmean-95 fault-both-1 1428.93 ( 0.00%) 1336.45 ( 6.47%) 1125.72 ( 21.22%) 1324.67 ( 7.30%) > BAmean-95 fault-both-3 1881.39 ( 0.00%) 1868.23 ( 0.70%) 2257.90 ( -20.01%) 1794.46 ( 4.62%) > BAmean-95 fault-both-4 1853.49 ( 0.00%) 2038.27 ( -9.97%) 1758.37 ( 5.13%) 1522.69 ( 17.85%) > BAmean-99 fault-base-1 0.00 ( 0.00%) 0.00 ( 0.00%) 0.00 ( 0.00%) 0.00 ( 0.00%) > BAmean-99 fault-base-3 0.00 ( 0.00%) 0.00 ( 0.00%) 0.00 ( 0.00%) 0.00 ( 0.00%) > BAmean-99 fault-base-4 0.00 ( 0.00%) 0.00 ( 0.00%) 0.00 ( 0.00%) 0.00 ( 0.00%) > BAmean-99 fault-huge-1 1447.04 ( 0.00%) 1394.38 ( 3.64%) 1188.40 ( 17.87%) 1359.40 ( 6.06%) > BAmean-99 fault-huge-3 2139.13 ( 0.00%) 2127.28 ( 0.55%) 2500.44 ( -16.89%) 2024.05 ( 5.38%) > BAmean-99 fault-huge-4 2051.01 ( 0.00%) 2141.53 ( -4.41%) 1959.27 ( 4.47%) 1705.47 ( 16.85%) > BAmean-99 fault-both-1 1447.04 ( 0.00%) 1394.38 ( 3.64%) 1188.40 ( 17.87%) 1359.40 ( 6.06%) > BAmean-99 fault-both-3 2139.13 ( 0.00%) 2127.28 ( 0.55%) 2500.44 ( -16.89%) 2024.05 ( 5.38%) > BAmean-99 fault-both-4 2051.01 ( 0.00%) 2141.53 ( -4.41%) 1959.27 ( 4.47%) 1705.47 ( 16.85%) > > thpscale Percentage Faults Huge > thp thp thp thp > base1 base2 lru1 lru2 > Percentage huge-1 100.00 ( 0.00%) 100.00 ( 0.00%) 100.00 ( 0.00%) 100.00 ( 0.00%) > Percentage huge-3 100.00 ( 0.00%) 100.00 ( 0.00%) 100.00 ( 0.00%) 100.00 ( 0.00%) > Percentage huge-4 100.00 ( 0.00%) 100.00 ( 0.00%) 100.00 ( 0.00%) 100.00 ( 0.00%) > > thp thp thp thp > base1 base2 lru1 lru2 > Duration User 93.79 93.26 93.61 97.02 > Duration System 592.52 601.32 585.31 575.20 > Duration Elapsed 1239.40 1243.79 1232.97 1229.09 > > thp thp thp thp > base1 base2 lru1 lru2 > Ops Minor Faults 2532126.00 2377121.00 2410222.00 2414384.00 > Ops Major Faults 836.00 722.00 778.00 610.00 > Ops Swap Ins 676.00 644.00 656.00 760.00 > Ops Swap Outs 15887.00 15705.00 11341.00 6812.00 > Ops Allocation stalls 67986.00 44391.00 48791.00 70025.00 > Ops Fragmentation stalls 0.00 0.00 0.00 0.00 > Ops DMA allocs 0.00 0.00 0.00 0.00 > Ops DMA32 allocs 0.00 0.00 0.00 0.00 > Ops Normal allocs 163203689.00 154651154.00 159354937.00 165237378.00 > Ops Movable allocs 0.00 0.00 0.00 0.00 > Ops Direct pages scanned 832666.00 1385214.00 652686.00 499004.00 > Ops Kswapd pages scanned 808301.00 3517190.00 2310658.00 615450.00 > Ops Kswapd pages reclaimed 28737.00 314122.00 13761.00 21149.00 > Ops Direct pages reclaimed 1542.00 118664.00 278.00 5002.00 > Ops Kswapd efficiency % 3.56 8.93 0.60 3.44 > Ops Kswapd velocity 652.17 2827.80 1874.06 500.74 > Ops Direct efficiency % 0.19 8.57 0.04 1.00 > Ops Direct velocity 671.83 1113.70 529.36 405.99 > Ops Percentage direct scans 50.74 28.26 22.03 44.78 > Ops Page writes by reclaim 15887.00 15705.00 11341.00 6812.00 > Ops Page writes file 0.00 0.00 0.00 0.00 > Ops Page writes anon 15887.00 15705.00 11341.00 6812.00 > Ops Page reclaim immediate 0.00 0.00 0.00 0.00 > Ops Sector Reads 79350969.00 79290528.00 79326339.00 79294800.00 > Ops Sector Writes 105724641.00 105722825.00 105705814.00 105687161.00 > Ops Page rescued immediate 0.00 0.00 0.00 0.00 > Ops Slabs scanned 83935.00 113839.00 100286.00 78442.00 > Ops Direct inode steals 56.00 44.00 86.00 31.00 > Ops Kswapd inode steals 0.00 1.00 2.00 2.00 > Ops Kswapd skipped wait 0.00 0.00 0.00 0.00 > Ops THP fault alloc 232051.00 232036.00 232035.00 232035.00 > Ops THP fault fallback 1.00 0.00 0.00 0.00 > Ops THP collapse alloc 13.00 12.00 15.00 11.00 > Ops THP collapse fail 0.00 0.00 0.00 0.00 > Ops THP split 22665.00 52360.00 35592.00 15363.00 > Ops THP split failed 0.00 0.00 0.00 0.00 > Ops Compaction stalls 144127.00 120784.00 125512.00 144578.00 > Ops Compaction success 8039.00 24423.00 15316.00 3672.00 > Ops Compaction failures 136088.00 96361.00 110196.00 140906.00 > Ops Compaction efficiency 5.58 20.22 12.20 2.54 > Ops Page migrate success 4170185.00 12177428.00 7860810.00 3037053.00 > Ops Page migrate failure 9476.00 9987.00 1987.00 623.00 > Ops Compaction pages isolated 9551164.00 25547480.00 16290756.00 6222921.00 > Ops Compaction migrate scanned 6529450.00 15982527.00 9845328.00 5711509.00 > Ops Compaction free scanned 17198448.00 21663579.00 9531167.00 10790527.00 > Ops Compact scan efficiency 37.97 73.78 103.30 52.93 > Ops Compaction cost 4555.96 13237.59 8537.99 3310.69 > Ops Kcompactd wake 51.00 88.00 48.00 20.00 > Ops Kcompactd migrate scanned 127333.00 325654.00 144656.00 670374.00 > Ops Kcompactd free scanned 100028.00 35658.00 12486.00 127376.00 > Ops NUMA alloc hit 48379083.00 48250045.00 48278578.00 48259808.00 > Ops NUMA alloc miss 68141.00 51994.00 61465.00 70881.00 > Ops NUMA interleave hit 0.00 0.00 0.00 0.00 > Ops NUMA alloc local 48379030.00 48250007.00 48278535.00 48259769.00 > Ops NUMA base-page range updates 19832.00 4340.00 14959.00 5190.00 > Ops NUMA PTE updates 2424.00 756.00 1647.00 1094.00 > Ops NUMA PMD updates 34.00 7.00 26.00 8.00 > Ops NUMA hint faults 2148.00 386.00 1411.00 415.00 > Ops NUMA hint local faults % 1814.00 362.00 1401.00 238.00 > Ops NUMA hint local percent 84.45 93.78 99.29 57.35 > Ops NUMA pages migrated 5392.00 535.00 1030.00 1710.00 > Ops AutoNUMA cost 10.98 1.97 7.18 2.14 >